Social links profile - No framework - Only CSS

What are you most proud of, and what would you do differently next time?

Thanks to @Islandstone89, I decided to switch from pixels to rem. I add to make some caculations but it seems to work on different screen sizes and resolutions.

What challenges did you encounter, and how did you overcome them?

It's the first time in 10 years I use only rem instead of pixels and pourcentages :).

What specific areas of your project would you like help with?

I'd like to have to feedback about the project, the code, and how accessible it is.

Thank you, Tom!